Add optional mothership IP override to the provisioning flow so nodes
on networks where mDNS is blocked (enterprise WiFi, mesh, VLANs) can
connect on first boot without manual intervention.
- Add ms_ip field to provisioning Payload and request structs
- Firmware writes ms_ip to both NVS_KEY_MS_IP and NVS_KEY_MS_IP_PROV
- Discovery prefers provisioned IP on first attempt, falls back to
mDNS, then cached IP
- Web Serial wizard adds Mothership IP field in Network Troubleshooting
- Auto-populates IP when browser accesses dashboard by IP address
- Document when/how to use the override in docs/notes/mdns-override.md
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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